On multi-core CPU systems, Windows 7's task manager used to display a separate utilization graph for each core unit:
On Windows 8 the task manager looks much fancier, and yet it shows a single graph for a multi-core cpu and there is no obvious way to show other cores:
Did Microsoft remove this feature or is it buried somewhere in the settings?
Update: Okay, it's really that simple. It turned out that I could not switch the graph into multi-core mode as the 'logical processors' menu item was disabled. Disabled because I was running Windows 8 in a virtual machine that by default had limited the number of available processors to 1. After changing the setting and rebooting I've got new graph options. Thanks everyone!